>From d5c454bc9c68a6b2b40a2301a21f7337d6086d4c Mon Sep 17 00:00:00 2001 From: Wang Liang <[email protected]> Date: Mon, 12 Apr 2021 18:24:21 +0800 Subject: [PATCH] Fix userspace datapath crash caused by IP fragments
The ovs userspace datapath will crash on openflow packet-out message with IP packet largger than MTU. This patch will fix the problem. When pre-processing the IP fragments, clone the packet if it has 'dnsteal' flag set. Signed-off-by: Wang Liang <[email protected]> --- lib/ipf.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/lib/ipf.c b/lib/ipf.c index c20bcc0b3..43f81706c 100644 --- a/lib/ipf.c +++ b/lib/ipf.c @@ -811,7 +811,7 @@ ipf_process_frag(struct ipf *ipf, struct ipf_list *ipf_list, * recommend not setting the mempool number of buffers too low * and also clamp the number of fragments. */ struct ipf_frag *frag = &ipf_list->frag_list[last_inuse_idx + 1]; - frag->pkt = pkt; + frag->pkt = dnsteal ? dp_packet_clone(pkt) : pkt; frag->start_data_byte = start_data_byte; frag->end_data_byte = end_data_byte; frag->dnsteal = dnsteal; -- 2.27.0 _______________________________________________ dev mailing list [email protected] https://mail.openvswitch.org/mailman/listinfo/ovs-dev
